1. Click on the 【Security】 tab, in the【2-Factor Authentication】section, click on the【Delete】 button that is next to the Security Key - YubiKey option.
2. Insert your YubiKey into an available USB port on your machine and press the authentication button within 60 seconds. You can try again if the time is up.
3. Verify the deletion of your YubiKey through Google Authentication or SMS Authentication.
4. The Yubikey has been removed from your account successfully.